16 BIRDS OF EASTERN MASSACHUSETTS 



70. Common Tern ; " Wilson's Tern ;" " Mack- 

 erel Gull" Sterna hirundo Linne. Abundant M. and lo- 

 cally common S. R. coastwise; casual inland; accidental in 

 winter (Woods Hole, Jan., Feb.). May 1 - Oct. 30 (winter). 

 Breeds on Milk Id., off Cape Ann. 



71. Arctic Tern Sterna paradiscea Briinnich. Un- 

 common local S. R. coastwise (Muskeget Id.); casual in- 

 land. May- Oct. In Essex Co. an uncommon M., former- 

 ly S. R. at Ipswich dunes and Beverly harbor. Nest on 

 ground. 



72. Roseate Tern Sterna dougalli Montagu. Lo- 

 cally common S. R. coastwise in southern Mass. May 1- 

 Oct. 4. In Essex Co. now a rare migrant (to Sable Id.), 

 formerly S. R. on islets at Beverly and Nahant. Nest on 

 ground. Eggs, May 20 - July 30. 



74. Least Tern Sterna antilldrum (Lesson). Un- 

 common S. R. coastwise from Cape Cod south; casual else- 

 where. Formerly bred at Ipswich. April 27) May 4 -Oct. 

 Nest on ground. Eggs, May 31 - June 29. 



75. Sooty Tern Sterna fuscdta Linne. Accidental 

 from South. Lawrence, Oct. 29; Chatham, Sept. 



77. Black Tern Hydrochelidon nigra surinamensis 

 (Grmelin). Rare spring and not uncommon fall coastwise 

 V. from West; casual inland. June 7- 10; (July 11) Aug. 

 8 - Sept. 26. 



RYNCHOPIDJE. SKIMMERS. 



*8O. Black Skimmer Rynchops nigra Linne*. Oc- 

 casional S. V. from South coastwise; casual inland. July 

 16 -Aug. 19. 



PROCELLARIID^E. FULMARS, SHEARWATERS, AND PETRELS. 



*86. Fulmar ; Noddy Fulmdrus glacidlis glacialis 

 (Linne). Rare fall and W. V. from North off-shore. Georges 

 Bank. Oct. 28 - winter. 



*88. Cory's Shearwater Puffinus boredlis Cory. 

 Uncommon S. and fall V. off-shore. Aug. 2 - Nov. 



89. Greater Shearwater; Hag; Hagdon Puf- 

 finus grdvis (O'Reilly). Common S. V. off the coast; casual 

 inland. May 26 - Nov. 



95. Sooty Shearwater; Black Hag" Puffinus 

 griseus (Gmelin). Not uncommon summer and fall V. from 

 Southern Hemisphere off-shore. (Mar.) July -Oct. 



